• In Stock
  • Sold by Newegg
  • New
Brands
Show More
Price
Show More
Type
Show More
External USB Ports
Show More
Thunderbolt 3
External 1394 Ports
Sold by
All Top Brands
Availability
Condition
Current Promotion
Useful Links
Customer Ratings
Sort By:
View:
USB 3.2 Gen2 Type-C 20Gbps USB-C to PCI-E 4X Express Card Adapter for Desktop Motherboard
Quick View
  •  
  • $102.40 
  • Free Shipping
  • $101.00 - $102.40
Geekworm X1500 CM5 IO Carrier Board for Raspberry Pi Compute Module 5 Support Dual M.2 NVMe SSD|1GbE Ethernet Port
Quick View
  •  
  • $141.37 
  • Free Shipping
SA-046 CF-Express Type-B to NVMe 2230 M.2 M-Key CH SN530 SSD Adapter CFE for XBOX Series XS PCIe4.0 Expansion Memory Card
Quick View
  • $43.40 - $44.80
Dual 2.5 Gigabit M.2 M+B Key Ethernet Network Expansion Card
Quick View
Dual 2.5 Gigabit M.2 M+B Key Ethernet Network Expansion Card

Limited time offer, ends 05/05

  • Model #: C2AG-1226-C103
  •  
  • $132.34 
  • Free Shipping
  • $131.34 - $132.34
USB 3.0 PCI-E Card 4 Port USB3.0 5Gbps Dual Channel PCIE to USB 3 Expansion Card Adapter For Desktop Computer Compontens
Quick View
  •  
  • $141.21 
  • Free Shipping
NGFF M.2 NVMe Host to CFExpress CFB Extension Adapter M2 M-key for CFE Type-B Support R5 Z6 Z7 Memory Card
Quick View
  • $19.40 - $20.80
NGFF M.2 NVMe Host to CFExpress CFB Extension Adapter M2 M-key for CFE Type-B Support R5 Z6 Z7 Memory Card
Quick View
  • $19.40 - $20.80
MZHOU PCI-E 1X to 16X Riser Card with M.2 to PCI-E X1 NGFF Slot NVME Adapter Card,for Bitcoin Crypto Mining Ethereum MiningBlack
Quick View
  •  
  • $165.37 
  • Free Shipping
Laptop Gpu External without 18x10x5 Laptop External Independent Video Card Dock for Mini Pcie without Power Supply
Quick View
  • $169.10 - $170.50
SF-049 OCuLink PCIe PCI-Express SFF-8611 8x 8-Lane to OCuLink SFF-8611 8x SSD Data Active Cable 50cm
Quick View
  • $73.40 - $74.80
SF-050 OCuLink PCIe PCI-Express SFF-8611 8x 8-Lane to Dual SFF-8087 4x SSD Data Active Cable 50cm
Quick View
  • $73.40 - $74.80
SilverStone Technology ECS07 5-Port SATA Gen3 6Gbps Non-RAID M.2 PCIe Storage Expansion Card, SST-ECS07
Quick View
  •  
  • $144.57 
  • Free Shipping
ChenYang M.2 to PCIe 3.0 X16 Adapter, 4 Port NVME/AHCI SSD to PCI Express Expansion Card Adapter with 12cm Slot Bracket
Quick View
  •  
  • $110.97 
  • Free Shipping
IO-PCE8126-GLAN PCIe X1 to 1Port 5G RJ45 Net Work Card PXE Diskless Boot Net Work Adapter Support Desktop, Server, NAS Soft Routing
Quick View
  • $39.71 - $41.11
SA-024 4X NVME M.2 AHCI to PCIE Express 3.0 Gen3 X16 Raid Card VROC Raid0 Hyper Adapter
Quick View
  • $49.40 - $50.80
PH416 M.2 NVMe PCIe3.0 X4 to U.2 SFF8639 Extension Card 6G Support 2.5in SSD Bkey Mkey 2230 2242 2260 2280 (PH416BOX)
Quick View
  • $28.58 - $29.98
2 Ports Mini PCI-E PCI Express to SATA 3.0 adapter Converter Hard Drive Extension Card Add On Cards for Windows Mac Linux OS
Quick View
  •  
  • $51.18 
  • Free Shipping
SA-016-2P Dual Slimline SFF-8654 8X 4 NVME to PCIE Express 3.0 4.0 Raid Card VROC Raid0 Hyper Adapter
Quick View
  • $58.40 - $59.80
PH46 PCIe3.0 X4 to U.2 SFF-8639 Adpter Card GEN4 High Speed Compatible with U.2 NVME SSD X4 X8 X16 Slot
Quick View
  • $33.08 - $34.48
SATA Female to 44Pin 2.5 IDE Male HDD SSD Adapter Converter 7+15P 22pin sata
Quick View
SATA Female to 44Pin 2.5 IDE Male HDD SSD Adapter Converter 7+15P 22pin sata

Limited time offer, ends 05/05

  • Model #: DG-ADD-convert-141
  •  
  • $48.42 
  • Free Shipping
  • $47.42 - $48.42
7+15Pin 2.5 Sata Female To 3.5 Inch Ide Sata To Ide Adapter Converter Male 40 Pin Port For Ata 133 100 Hdd Cd Dvd Serial
Quick View
  •  
  • $29.38 
  • Free Shipping
U.2 U2 SFF-8639 NVME PCIe SSD Cable for Mainboard Intel SSD 750 p3600 p3700 M.2 SFF-8643 Mini SAS HD
Quick View
  • $32.93 - $34.33

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