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StarTech.com PEX4S953LP 4-Port PCI Express RS232 Serial Adapter Card - 16950 UART - 256-byte FIFO Cache - ASIX AX99100 - Low Profile Bracket - Replacement for PEX4S952LP (PEX4S953LP)
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StarTech.com PEX4S953LP 4-Port PCI Express RS232 Serial Adapter Card - 16950 UART - 256-byte FIFO Cache - ASIX AX99100 - Low Profile Bracket - Replacement for PEX4S952LP (PEX4S953LP)
  • Type: PCI Express to Serial Port Card
  • External Ports: 4 - DB-9 (9 pin, D-Sub) Male
  • Internal Ports: 1 - LP4 (4 pin; Large Drive Power) Male Input
  • Operating Systems Supported: Windows 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 2.6.x LTS Versions only
  • Model #: PEX4S953LP
StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Model PEX4S232485
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StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Model PEX4S232485
  • Type: PCI Express to Serial Port Card
  • External Ports: 2 x RS232 2 x RS422 / RS485
  • Operating Systems Supported: Windows 8 (32/64bit), 7 (32/64), Vista(32/64), XP(32/64), 2000 Windows Server 2008 R2, 2003(32/64) Linux Kernel 2.6.x
  • Specifications: Data Bits: 5, 6, 7, 8 FIFO: 256 Bytes Flow Control: None, Xon/Xoff, RTS/CTS Max Baud Rate: 460.8 Kbps Parity: None, Odd, Even, Space, Mark Serial Protocol: RS-232/422/485 Stop Bits: 1, 1.5, 2 Supported Protocols: RS-232, RS-422, RS-485 2-wire / 4-wire
  • Model #: PEX4S232485
StarTech 3 Port 2b 1a PCI Express 1394 FireWire Adapter Card
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StarTech 3 Port 2b 1a PCI Express 1394 FireWire Adapter Card
  • Type: PCI Express to 1394 Card
  • External USB Ports: PCI Express
  • External 1394 Ports: 3x 1394 Ports
  • Standard: 1394A/1394B
  • Model #: PEX1394B3
StarTech M.2 to U.3 Adapter For M.2 NVMe SSDs PCIe Drive 1M25U3M2ADAPTER
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StarTech M.2 to U.3 Adapter For M.2 NVMe SSDs PCIe Drive 1M25U3M2ADAPTER
  • Brand: StarTech
  • Type: AHCI SSD Adapter
  • Model #: 1M25-U3-M2-ADAPTER
MAIWO 4-Port pcie to USB 3.0 (Type-A) Expansion Card, pcie USB Add on Card, Internal USB3 Hub Converter for Desktop PC Host Card Support Windows 10/8/7/XP and MAC OS 10.8.2 Above
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MAIWO 4-Port pcie to USB 3.0 (Type-A) Expansion Card, pcie USB Add on Card, Internal USB3 Hub Converter for Desktop PC Host Card Support Windows 10/8/7/XP and MAC OS 10.8.2 Above
  • Type: Mini PCI Express to USB Card
  • External USB Ports: 4-port USB 3.0
  • Internal USB Ports: 4x USB Ports
  • Dimensions: 4.7*4.48*0.86 inch
  • Model #: KC005A
  •  
  • $29.99 
  • $9.67 Shipping
PCIe 3.0/4.0 to 10Gbps USB 3.2 Gen2 Expansion Card,5-Ports (3x USB Type-C,2x USB A)  to PCI Express x4 PC Internal USB Hub for Windows 10/8/7 Linux and MAC OS 10.8.2 above with Full-Profile Slot Cover
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  • $61.49 
  • Free Shipping
  • $60.96 - $61.49
ORICO 4-Port USB3.0 PCI-E Expansion Card  USB3.0 4 Port PCI Express to USB3.0 Host Controller Adapter Card with 30cm 15PIN SATA to Big 4PIN Power Cord Compatible with Windows,Vista,Linux and Mac OS
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  • $30.99 
  • Free Shipping
PCI-E to 8 Port USB 3.0 (2xUSB-C, 6x USB-A ) Expansion Card 5Gbps,External PCI Express USB3.0 Adapter Card For Desktop PC PCI-e 1x, Support Windows 10/8/7/XP
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PCI-E to 8 Port USB 3.0 (2xUSB-C, 6x USB-A ) Expansion Card 5Gbps,External PCI Express USB3.0 Adapter Card For Desktop PC PCI-e 1x, Support Windows 10/8/7/XP

Limited time offer, ends 05/11

  • Type: Controller Card
  • External USB Ports: 8x USB Ports
  • Internal USB Ports: 6x USB-A Ports, 2x USB-C Ports
  • External Ports: 6x USB-A Ports, 2x USB-C Ports
  • Model #: PCET2C+6U3
  •  
  • $58.90 
  • Free Shipping
  • $56.50 - $58.90
PCIE to 2 Port USB C Expansion Card Adapter 10Gbps, PCI-E Type C USB 3.2 Gen2 Controller Card with Low Profile Bracket for Windows 11/10/8/7/XP
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  • $41.99 
  • Free Shipping
  • $39.50 - $41.99
PCIe SATA Card 6Ports, RIITOP PCI-e Express to SATA3 6Gbps Expansion Controller Adapter Card, ASM1166 Chip Non-Raid,with 6 SATA Cables and Low Profile Bracket, Support 6 SATA 3.0 Devices
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PCIe SATA Card 6Ports, RIITOP PCI-e Express to SATA3 6Gbps Expansion Controller Adapter Card, ASM1166 Chip Non-Raid,with 6 SATA Cables and Low Profile Bracket, Support 6 SATA 3.0 Devices

Limited time offer, ends 05/11

  • Type: PCI Express Controller Card
  • Internal Ports: 6x SATA 3.0
  • Standard: PCI-e Express to SATA 3.0 Expansion Card Adapter
  • Data Transfer Rate: 6.0 Gbps
  • Model #: PCES36P+CB
  •  
  • $64.99 
  • Free Shipping
  • $51.50 - $64.99
4 Ports USB 3.0 PCIe Card Adapter Super Speed 5Gbps, PCI Express x1 Expansion USB3.0 Card for Windows 11/10/8.1/8/7/Vista/XP/Server
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  • $31.99 
  • Free Shipping
EnLabs PCIEU3ACS20 PCI-e to 4 Ports USB 3.2 GEN 1 (5Gbps)(USB Type-C +USB Type A  w/ Internal 19Pin USB 3.0 Dual Port)  PCI Express Card, Power by 15pin SATA w/ Full-Profile & Low-Profile Bracket
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EnLabs PCIEU3ACS20 PCI-e to 4 Ports USB 3.2 GEN 1 (5Gbps)(USB Type-C +USB Type A w/ Internal 19Pin USB 3.0 Dual Port) PCI Express Card, Power by 15pin SATA w/ Full-Profile & Low-Profile Bracket

Limited time offer, ends 05/30

  • Type: PCI Express to USB Card
  • Internal USB Ports: 4x USB Ports
  • External Ports: USB 3.2 Type-C + USB type-A (5Gbps)
  • Internal Ports: USB 3.0 20pin
  • Model #: PCIEU3ACS20
  •  
  • $25.69 
  • Free Shipping
  • $24.76 - $25.69
20Gbps PCIe USB C Card - RIITOP USB 3.2 Gen 2x2 (20Gbps) USB-C SuperSpeed PCI Express 3.0 x4 Host Controller Card - USB Type-C PCIe Add-On Adapter Card - Expansion Card, For Windows & Linux
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  •  
  • $49.99 
  • Free Shipping
  • $49.00 - $49.99
2.5G PCIe Network Adapter Card RTL8125B 2500/1000/100Mbps, RIITOP PCI Express Gigabit Ethernet Card RJ45 LAN Controller, Support PXE for Windows Linux Mac OS
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  • $30.95 
  • Free Shipping
  • $29.50 - $30.95
PCIe to PCI Adapter, RIITOP PCI-e Express to 2x PCI Expansion Card Converter Riser Extender with USB 3.0 (2Ft) Cable
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PCIe to PCI Adapter, RIITOP PCI-e Express to 2x PCI Expansion Card Converter Riser Extender with USB 3.0 (2Ft) Cable

Limited time offer, ends 05/11

  • Type: PCI Express to PCI Card
  • External USB Ports: PCI
  • Standard: One PCI Express x1 Slot convert to two PCI Slots.
  • Operating Systems Supported: Windows 2000/NT/2003/XP/Vista/7/8/10, Linux System.
  • Model #: PCIET2I
  •  
  • $41.99 
  • Free Shipping
  • $39.50 - $41.99
M.2 NGFF to Desktop PCIe x4 x8 x16 Adapter Card, RIITOP NVMe SATA Dual SSD PCI Express Adapter Card Support 110mm, 80mm, 60mm, 42mm, 30mm SSD
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M.2 NGFF to Desktop PCIe x4 x8 x16 Adapter Card, RIITOP NVMe SATA Dual SSD PCI Express Adapter Card Support 110mm, 80mm, 60mm, 42mm, 30mm SSD

Limited time offer, ends 05/11

  • Type: PCI Express to M.2 Card
  • External USB Ports: PCI Express
  • External Ports: PCIe 3.0 x4 and SATA
  • Internal Ports: M Key M.2 NVMe Slot + B Key M.2 NGFF Slot
  • Model #: PCE4XTM2-DL
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  • $20.99 
  • Free Shipping
  • $19.50 - $20.99
Dual NVMe PCIe Adapter, RIITOP (2 Ports) M.2 NVMe SSD to PCI-e Express 3.1 x8 Expansion Add-on Card
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Dual NVMe PCIe Adapter, RIITOP (2 Ports) M.2 NVMe SSD to PCI-e Express 3.1 x8 Expansion Add-on Card

Limited time offer, ends 05/11

  • Type: PCI Express Controller Card
  • Compatibility: PCI-e 8x (or above).
  • Specifications: Bus Type: PCI Express. Card Type: Standard/Low Profile. Chipset ID:ASMedia – ASM2812. Compatible Drive Types: NVMe SSD (PCIe, M-Key). Drive Installation: Fixed. Interface: PCI Express x8 (compatible with x8 or x16). Number of Drives: 2. Bootable: Yes. Hot Swap Capability: No. Type and Rate: PCI Express 3.0 (8Gbps). Drive Connectors: 2 – M.2 (PCIe, M-Key, NVMe, NGFF). Host Connectors: 1 – PCI Express x8 Male. OS Compatibility: OS independent; No software or drives required. Special Notes / Requirements: System and Cable Requirements PCI Express enabled. Computer with an available PCI Express: x8 or x16 slot. Environmental Humidity: 20~80% RH. Operating Temperature: 5°C to 50°C (41°F to 122°F). Storage Temperature: -25°C to 70°C (-13°F to 158°F). Demensions: 120x195x22...
  • Model #: 2NV-PCE8X
  •  
  • $131.99 
  • Free Shipping
  • $129.50 - $131.99
Vantec 5-Port USB 3.2 Gen2x2 (20Gbps) with 2C and 3A PCIe Host Card (UGT-PC3A2C), Full Height
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  • $95.99 
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VANTEC UGT-M2PC110 M.2 NVMe PCIe X4 Adapter For Extra Long 110mm Module
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VANTEC UGT-M2PC110 M.2 NVMe PCIe X4 Adapter For Extra Long 110mm Module
  • Type: PCI Express to M.2 Card
  • External Ports: 1 x M.2 (NGFF), M Key
  • Internal Ports: 1 x PCIe x4
  • Operating Systems Supported: Available system board PCIe x4 or x8 or x16 slot OS support like Windows 7/8/8.1/10 (Windows 10 preferred), or Linux (Latest Kernel) For booting, requires System UEFI BIOS with booting Support and latest OS
  • Model #: UGT-M2PC110
VANTEC 4-Port SuperSpeed USB 3.0 PCIe Host Card w/ Internal 20-Pin Connector Model UGT-PC345
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VANTEC 4-Port SuperSpeed USB 3.0 PCIe Host Card w/ Internal 20-Pin Connector Model UGT-PC345
  • Type: PCI Express to USB Card
  • External USB Ports: 2x USB Ports
  • Internal USB Ports: 2x USB Ports
  • Standard: USB 3.0
  • Model #: UGT-PC345
StarTech.com PCI to PCI Express Adapter Card Model PCI1PEX1
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StarTech.com PCI to PCI Express Adapter Card Model PCI1PEX1
  • Type: PCI to PCI Express
  • Operating Systems Supported: Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, and Linux
  • Weight: 20
  • Parts: 2 Year
  • Model #: PCI1PEX1
StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA / SP4 Power Model PCIUSB3S4
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StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA / SP4 Power Model PCIUSB3S4
  • Type: PCI to USB Card
  • External USB Ports: 4x USB Ports
  • External Ports: 4 - USB 3.0 A (9 pin; SuperSpeed) Female
  • Internal Ports: 1 - SATA Power (15 pin) Plug 1 - SP4 (4 pin; Small Drive Power) Plug
  • Model #: PCIUSB3S4
4 Port PCIE PCI-e to USB 3.0 (2 x Type A+ 20 Pin Internal) Expansion Card Hub Controller PCI Express Card Adapter w/ Molex Power
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4 Port PCIE PCI-e to USB 3.0 (2 x Type A+ 20 Pin Internal) Expansion Card Hub Controller PCI Express Card Adapter w/ Molex Power

Limited time offer, ends 05/30

  • Type: PCI Express to USB Card
  • External USB Ports: 4-port USB 3.0
  • Specifications: Bus Type:PCI ExpressType Standard:Profile (LP bracket incl.) Chipset:VIA VL805 Interface: USB 3.0 Port Type and Rate :USB 3.0 - 5 Gbit/s Connector Type(s): 1 - PCI Express x1 Male External Ports: 2 - USB Type-A (9 pin) USB 3.0 Female Internal Ports : 2 x US 3.0 Internal Ports (20 pin connector) front panel for floppy bay Internal Ports : 1 - Molex 4 pin Plug
  • Package Contents: 1 x PCIe USB 3.0 PCI express card
  • Model #: PCE4USB-RD1
  •  
  • $23.69 
  • Free Shipping
  • $21.42 - $23.69
StarTech.com x4 PCI Express to SFF-8643 Adapter for PCIe NVMe U.2 SSD Model PEX4SFF8643
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StarTech.com x4 PCI Express to SFF-8643 Adapter for PCIe NVMe U.2 SSD Model PEX4SFF8643
  • Type: x4 PCI Express to SFF-8643
  • Specifications: Add high-performance enterprise-class storage to your PC or server Upgrade your system by providing compatibility for U.2 NVMe SSDs like the Intel SSD 750 series through a 4-lane PCI Express expansion card x4 PCIe to SFF-8643 adapter for PCIe NVMe U.2 SSD PCI Express 2.5in. NVM Express SSD adapter PCI Express 3.0x4 lane host adapter Compatible with PCIe 3.0 and PCIe 2.0 motherboards Provides faster read/write speeds and enhanced producvity for data-heavy workloads
  • Dimensions: 0.90" x 3.10" x 3.70"
  • Weight: 1.00 oz.
  • Model #: PEX4SFF8643
StarTech PEXUSB3S42V 4 Port Dual Bus PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - SATA/LP4 Power
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StarTech PEXUSB3S42V 4 Port Dual Bus PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - SATA/LP4 Power
  • Type: PCI Express
  • Specifications: Industry Standards: - USB 3.0 Specification Rev. 1.0 - USB Battery Charging Specification Rev. 1.2 (Apple Mode only) - PCI Express Base Specification Rev. 2.0 - Intel xHCI Specification Rev. 1.0 Interface: USB 3.0 Connector Type(s): 1 - PCI Express x4 Male External Ports: 4 - USB 3.0 A (9 pin; SuperSpeed) Female Internal Ports: - 1 - LP4 (4 pin; Molex Large Drive Power) Female - 1 - SATA Power (15 pin) Plug Maximum Cable Length: 9.8 ft [3 m] Maximum Data Transfer Rate: 5Gbps per 2 ports - 10Gbps Total Type and Rate: USB 3.0 - 5 Gbit/s UASP Support: Yes
  • Dimensions: 0.59" x 2.17" x 6.57" (W x H x L)
  • Weight: 0.13lb
  • Model #: PEXUSB3S42V
StarTech.com 3-port PCI Express USB 3.0 card + Gigabit Ethernet Model PEXUSB3S3GE
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StarTech.com 3-port PCI Express USB 3.0 card + Gigabit Ethernet Model PEXUSB3S3GE
  • Type: PCI Express to USB Card
  • External USB Ports: 3x USB Ports
  • External Ports: 3 - USB 3.0 A (9 pin; SuperSpeed) Female 1 - RJ-45 Female
  • Internal Ports: 1 - SATA Power (15 pin) Plug
  • Model #: PEXUSB3S3GE
StarTech.com PCI Express to Mini PCI Express Card Adapter (PEX2MPEX)
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StarTech.com PCI Express to Mini PCI Express Card Adapter (PEX2MPEX)
  • Type: PCI Express to Mini PCI Express
  • Specifications: Bus Type: PCI Express Card Type: Standard Profile (LP bracket incl.) Connector Type(s): 1 - IDC (10 pin; Motherboard Header) Male Connector Type(s): 1 - Mini PCI Express x1 (52 pin) Slot Female Connector Type(s): 1 - USB B (4 pin) Female Humidity: 5% ~ 95% RH LED Indicators: 1 - Power Operating Temperature: 0°C to 55°C (32°F to 131°F) Storage Temperature: -20°C to 85°C (-4°F to 185°F) System and Cable Requirements: PCI Express expansion slot
  • Dimensions: 2.68" x 2.95" x 0.55"
  • Weight: 5.51 oz.
  • Model #: PEX2MPEX
  •  
  • $91.97 
  • Free Shipping
StarTech.com PEXUSB312A3 2-Port USB PCIe Card with 10Gbps/port - USB 3.1/3.2 Gen 2 Type-A PCI Express 3.0 x2 Host Controller Expansion Card - Add-On Adapter Card - Full/Low Profile - Windows & Linux
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StarTech.com PEXUSB312A3 2-Port USB PCIe Card with 10Gbps/port - USB 3.1/3.2 Gen 2 Type-A PCI Express 3.0 x2 Host Controller Expansion Card - Add-On Adapter Card - Full/Low Profile - Windows & Linux
  • Type: PCI Express to USB Card
  • External USB Ports: 2 x USB 3.2 USB Type-A (9 pin, Gen 2, 10 Gbps)
  • Internal Ports: 1 x SATA Power (15 pin)
  • Standard: USB 3.2 Specification PCI Express Base Specification Rev. 3.0 Intel xHCI Specification Rev. 1.1 UASP (USB Attached SCSI Protocol) Rev. 1.0
  • Model #: PEXUSB312A3

Bestselling Add-On Cards Reviews:

Anonymous
3/30/2026 11:29:09 PM
Great Value! Invisible!

“ I bought this PCIx card and badda bing, badda boom it was working just fine immediately. ”

SYBA SI-PEX40110 M.2 M-Key NVMe PCI-e to PCI-e x4 Converter Card
Anonymous
3/7/2026 8:46:40 PM
Clean looking way to add more USB slots to a case

“ The added USB slots are very useful and the board plugged right into one of the unused PCIE slots on my motherboard. ”

StarTech PEXUSB4DP 4 Port PCI Express Low Profile High Speed USB Card - PCIe USB 2.0 Card - PCI-E USB 2.0 Card
Shawn S.
1/27/2026 9:32:37 AM
Excellent product at the best price I could find online

“ This replaced another StarTech powered PCI USB hub that uses a driver that is incompatible with Star Citizen, of all things. ”

StarTech.com PEXUSB3S7 7 Port PCI Express USB 3.0 Card - Standard & Low-Profile - SATA Power - UASP Support - 1 Internal & 6 External USB 3.0 Ports
David K.
1/1/2026 7:14:55 PM
Renesas Controller For Nvidia 3D Vision Emitter

“ I needed a PCIE usb card with a Renesas USB controller for my Nvidia 3D Vision emitter. ”

StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - SATA Power Model PEXUSB3S24
Tim M.
12/31/2025 7:34:04 PM
BOOM. More USB ports than I can shake a stick at

“ Many many many more USB-A style though blue not red ports to add to your system. ”

PCIe USB 3.0 Card 7 Port, RIITOP PCI-e Express x1 to 7 Port USB3.0 Expansion Controller Card Adapter, NEC Chipset, No Need Power Supply (NOT Compatible 2U Case)
Anonymous
12/2/2025 3:32:32 PM
Works fine, but I wasn't sent SYBA brand.

“ My reads seem fine but my writes seem a bit low compared to my NVMe drive in my MB, that could just be my new cheap drive I put in, or maybe the PCIe slot I used though. ”

SYBA SI-PEX40110 M.2 M-Key NVMe PCI-e to PCI-e x4 Converter Card
Anonymous
11/16/2025 7:28:10 AM
Simple setup, just plug and play

“ Make sure your PCI slot is operational. ”

StarTech 2P6G-PCIE-SATA-CARD SATA PCIe Card, 2 Port PCIe SATA Expansion Card, 6Gbps SATA, PCI Express to SATA Adapter, Non-RAID, PCIe to SATA Converter