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PCI serial port expansion card PCI to Dual Serial RS232 DB9 adapter card controller
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  • $65.55 
  • $7.48 Shipping
3+1 Ports USB3.0 Expansion card for VIA PCI Express X1 to 3 external +1 internal PCIe Riser card Up to 5Gbps
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  • $39.05 
  • $7.48 Shipping
PCI-E PCI express X4 to Dual USB3.1 Type A Expansion Card with 15 Pin SATA Power 10Gbps Adapter ASM1142 Chip add on card
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  • $99.67 
  • $7.48 Shipping
PCI express 2 Serial and 1 parallel port Riser Card RS232 Printer port PCI-e Card chip WCH
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  • $39.41 
  • $7.48 Shipping
PCI Express PCI-E 1X to 4 ports   RS232 DB9 COM Serial add on card Expansion I/O riser card
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  • $76.31 
  • $7.48 Shipping
PCIE PCI Express 1x to 4 ports USB 3.0 Expansion card Control Riser Card Adapter Red PCB board  up to 5Gbps
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PCIE PCI Express 1x to 4 ports USB 3.0 Expansion card Control Riser Card Adapter Red PCB board up to 5Gbps
  • External USB Ports: 4-port USB 3.0
  • External Ports: 4 port USB 3.0
  • Data Transfer Rate: Up to 5.0 Gbps
  • Model #: 908500843915
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  • $65.23 
  • $7.48 Shipping
1.2m Desktop Computer PC Case Power Supply on/off Reset Button Switch Block Extender Cable with Dual USB Port Dual Audio Plug
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  • $33.81 
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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