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ThinkSystem SR650 x8/x16ML2 PCIe FH Riser 1 Kit
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En-Labs PCIE22XDB9V2 2 Port RS-232 RS232 DB9 Serial COM to PCI-E PCI Express Card Controller Adapter Converter w/ Full Profile Bracket
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  • $19.59 
  • Free Shipping
  • $16.48 - $19.59
USB C PCIe Expansion Card,PCI-e Express 1X to 2 Ports USB-A & Type-C USB 3.1 5Gbps Desktop PC Case Add On Card Hub w/ Full-profile PCI Slot Cover
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  • $24.49 
  • Free Shipping
  • $21.73 - $24.49
SATA to Macbook SSD Adpater Converter for Macbook Air 2010 2011 6+12Pin SSD to SATA 22pin Bridge Card Board
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  • $16.69 
  • Free Shipping
  • $12.73 - $16.69
2 Ports PCIE PCI-e to USB 3.0 Expansion Card - USB Hub Controller Express Card Adapter for Desktop PC w/ Molex 4 pin Power
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2 Ports PCIE PCI-e to USB 3.0 Expansion Card - USB Hub Controller Express Card Adapter for Desktop PC w/ Molex 4 pin Power

Limited time offer, ends 04/30

  • Type: PCI Express to USB Card
  • External USB Ports: 2-port USB 3.0
  • Specifications: Bus Type:PCI Express Type Standard:Profile (LP bracket incl.) Chipset:NEC uPD720202 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 1 - Molex 4 pin Plug
  • Package Contents: 1 x PCI Express USB 3.0card 1 x Driver CD
  • Model #: PCE2USB-RD1
  •  
  • $20.89 
  • Free Shipping
  • $18.33 - $20.89
RTL8821AE 802.11ac 433Mbps WiFi Dual Band Bluetooth 4.0 Card FRU: 04X6026 for Lenovo laptop
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  • $18.99 
  • Free Shipping
4 Solid Capacitors VER 006C PCIe 1x to 16x PCI Express Extender Powered Riser Card,Ethereum Mining ETH GPU Riser Adapter Power by PCIe 6pin w/ 60cm USB 3.0 Extension Cable& 6-Pin PCI-E to SATA Power C
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4 Solid Capacitors VER 006C PCIe 1x to 16x PCI Express Extender Powered Riser Card,Ethereum Mining ETH GPU Riser Adapter Power by PCIe 6pin w/ 60cm USB 3.0 Extension Cable& 6-Pin PCI-E to SATA Power C

Limited time offer, ends 04/30

  • Type: PCI Express Controller Card
  • External USB Ports: 16x USB Ports
  • Package Contents: 1x PCI-E 16X riser board 1x PCI-E 1X adapter card 1x 60cm USB 3.0 cable 1x 6-pin PCI-E power to 15-pin SATA power cable
  • Model #: 311009
  •  
  • $17.49 
  • Free Shipping
  • $14.57 - $17.49
STW 2 Port USB 3.0 to Pci-e PCI Express Card Adapter Converter Motherboard 20 Pin Connector
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STW 2 Port USB 3.0 to Pci-e PCI Express Card Adapter Converter Motherboard 20 Pin Connector
  • Type: Mini PCI Express to USB Card
  • External USB Ports: 2-port USB 3.0
  • External Ports: 2 port USB 3.0
  • Model #: 3002-1
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  • $29.99 
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Silverstone SST-ECM22 Dual M.2 to PCIe x4 NVMe SSD and SATA 6 G  Adapter Card with Advanced Cooling
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Silverstone SST-ECM22 Dual M.2 to PCIe x4 NVMe SSD and SATA 6 G Adapter Card with Advanced Cooling
  • Type: PCI Express to SATA Card
  • Internal Ports: 1 x PCI Express x4 interface 1 x SATA 6 Gbps interface 2 x M.2 (NGFF)
  • Data Transfer Rate: up to 32 Gbps (PCIe) 6 Gbps (SATA)
  • Operating Systems Supported: Microsoft Windows 7 (32bit/64bit), 8/8.1/10 (32bit/64bit) or future release version Mac OS 10.2.8 or above Linux
  • Model #: SST-ECM22
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  • $99.99 
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3.5" USB 3.0 2 Ports Front Panel & PCIe to USB 4 Ports(2 USB Type-A+USB Internal 20pin) Expansion Card Kit w/ Low-Profile PCI Bracket, PCIe Express to 2 USB3 & Internal 20Pin to USB Splitter Cable-2FT
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3.5" USB 3.0 2 Ports Front Panel & PCIe to USB 4 Ports(2 USB Type-A+USB Internal 20pin) Expansion Card Kit w/ Low-Profile PCI Bracket, PCIe Express to 2 USB3 & Internal 20Pin to USB Splitter Cable-2FT

Limited time offer, ends 04/30

  • Type: Controller Card
  • External USB Ports: 2 Ext / 2 Int
  • Internal USB Ports: 2x USB Ports
  • External 1394 Ports: N/A
  • Model #: PCIEU3220KITSSU
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  • $33.79 
  • Free Shipping
  • $31.89 - $33.79
SYBA PCI-Express 2-Port DB9 Serial (RS-232) Card Model SI-PEX15055
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SYBA PCI-Express 2-Port DB9 Serial (RS-232) Card Model SI-PEX15055
  • Type: PCI Express to Serial Port Card
  • External Ports: PCI-Express
  • Internal Ports: 2 x DB9 Serial (RS-232)
  • Data Transfer Rate: up to 115200bps/port
  • Model #: SI-PEX15055
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  • $48.76 
  • Free Shipping

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