Skip to main content
  • 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
Discount
Useful Links
Customer Ratings
Sort By:
View:
Micro Connectors M.2 NVMe PCIe 3.0 x4 Adapter
Quick View
  •  
  • $31.47 
  • Free Shipping
Quick Charge
Quick View
ASUS
Quick Charge
  • Model #: ThunderboltEX 5
PCI-E 3.0 M.2 M-key to Oculink SFF-8612 SFF-8611
Quick View
PCI-E 3.0 M.2 M-key to Oculink SFF-8612 SFF-8611

Limited time offer, ends 09/19

  • Model #: B3EW0919021
  • $102.50 - $103.90
eShinreal 2 Port MCIO to PCIe 5.0 x16 Slot Adapter Card
Quick View
eShinreal 2 Port MCIO to PCIe 5.0 x16 Slot Adapter Card
  • Type: Controller Card
  • Model #: XIC 0516PE
eShinreal SFF-8643 8i to PCIe 3.0 x16 Slot Adapter
Quick View
eShinreal SFF-8643 8i to PCIe 3.0 x16 Slot Adapter
  • Type: Controller Card
  • Model #: XIC 338PE
HP Server Options 653208-B21 DL380 GEN8 PCIE 3Slot 2X16
Quick View
HP
HP Server Options 653208-B21 DL380 GEN8 PCIE 3Slot 2X16
  • Type: Riser Card
  • Compatibility: HP DL380 Server Series
  • Specifications: Expansion Slots:1 x PCI Express 2 x PCI Express x16
  • Dimensions: 18.6" Height x 22.1" Width x 11.0" Thickness
  • Model #: 653208-B21
  •  
  • $297.74 
  • Free Shipping
1Pcs for   AEC-7722 IDE TO SCSI IDE 68 pins,  card SCSIDE-LVD
Quick View
  •  
  • $119.00 
  • Free Shipping
eShinreal 4 Port 6Gb/s Mini PCIe to SATA 3 Expansion Card
Quick View
eShinreal 4 Port 6Gb/s Mini PCIe to SATA 3 Expansion Card
  • Type: Controller Card
  • Model #: HBA M9215-4I
SUNIX 8-Port RS-232 Serial PCI-E Card Model SER5466A
Quick View
SUNIX 8-Port RS-232 Serial PCI-E Card Model SER5466A

Limited time offer, ends 09/12

  • Specifications: Interface : RS-232 Controller: SUNIX SUN1999 (16C950 UART Compatible) Bus: PCI Express one lane (x1) No. of Port: 8-port IRQ & IO: Assigned by System FIFO: 128 byte (Hardware) Signal: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND Baud rate: 50 bps to 115.2 Kbps Data bit: 5,6,7,8 Stop bit: 1,1.5,2 Parity: None, Even, Odd, Space, Mark Flow Control: None, Xon/Xoff, RTS/CTS
  • Dimensions: 127 x 98 mm
  • Model #: SER5466A
eShinreal 4 Port 6Gb/s PCIe x4 to SATA 3 RAID Card
Quick View
  •  
  • $76.00 
  • $25.00 Shipping
Eight Port PCI Serial Expansion Card
Quick View
Eight Port PCI Serial Expansion Card

Limited time offer, ends 09/12

  • Model #: SER5066A
MC770AQ Hybrid Mini TV Card
Quick View
MC770AQ Hybrid Mini TV Card

Limited time offer, ends 09/15

  • Model #: WLC78S.0807.Pallet1822
  •  
  • $66.21 
  • Free Shipping
  • $64.81 - $66.21
eShinreal 2 Port PCIe  x4 to M.2 NVMe SSD NGFF Adapter Card
Quick View
  •  
  • $19.40 
  • $25.00 Shipping
eShinreal PCIe x8 to 24 Port SFF-8087 6Gb/s Expansion Card
Quick View
eShinreal PCIe x8 to 24 Port SFF-8087 6Gb/s Expansion Card
  • Type: Controller Card
  • Model #: HBA SAS2008-24I
PCIe x1 3-Port IEEE 1394B FireWire 800 Controller Card
Quick View
  •  
  • $69.54 
  • Free Shipping
4 Port 10Gb/s PCIe x4 USB 3.1 Expansion Card
Quick View
4 Port 10Gb/s PCIe x4 USB 3.1 Expansion Card

Limited time offer, ends 09/13

  • Model #: LC6W1J29-320
  •  
  • $394.40 
  • Free Shipping
eShinreal 8-Port M.2 NVMe SSD Testing Board
Quick View
eShinreal 8-Port M.2 NVMe SSD Testing Board
  • Type: Controller Card
  • Model #: XIC 3342-8I
  •  
  • $132.00 
  • $25.00 Shipping
eShinreal 4 Port SFF-8643 to PCIe3.0 x16 Slot Adapter Card
Quick View
For PCI-8335 MXI-3 communication card PCI interface, control equipment
Quick View
  •  
  • $466.00 
  • $15.00 Shipping
For PCI-1751 REV. A1 02-3 48-bit PCI digital input/output card
Quick View
  •  
  • $203.00 
  • $15.00 Shipping
eShinreal 1-Port SFF-8643 to PCIe 3.0 x16 Slot Adapter
Quick View
eShinreal 1-Port SFF-8643 to PCIe 3.0 x16 Slot Adapter
  • Type: Controller Card
  • Model #: XIC 6911
For PCI-1240U REV. A1 4-axis u versal PCI stepper/pulse control card
Quick View
  •  
  • $304.00 
  • $15.00 Shipping
For PCI-1734 32-way isolated digital output card isolated PCI-1734 REV. A1
Quick View
  •  
  • $203.00 
  • $15.00 Shipping
HP 617824-001 SC08e 6GB 2 Port Controller 615242-001, 614988-B21
Quick View
  •  
  • $128.98 
  • Free Shipping
eShinreal 24-Port 12G SAS Expansion Card-SAS35X36
Quick View
eShinreal 24-Port 12G SAS Expansion Card-SAS35X36
  • Type: Controller Card
  • Model #: EXC SAS35X36-24I
  •  
  • $485.00 
  • $25.00 Shipping
For PCI SDLC REV.03A communication Card industrial Control Card
Quick View
  •  
  • $162.00 
  • $15.00 Shipping
For RR1U-E8 1510G3 NF130D2 1U Adapter Card PCI-E Adapter Card
Quick View
  •  
  • $41.00 
  • $15.00 Shipping
HP NC542M Dual PORT-10 10GbE BLC Nic Adapter 539857-B21 539933-001 539855-001
Quick View
  •  
  • $143.98 
  • Free Shipping

Bestselling Add-On Cards Reviews:

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

“ NO, 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
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)
10/23/2024 12:00:48 AM
Maybe a Necessity if You Have USB-C on Front Panel

“ The PCI-E 1X to USB 3.2 GEN1 5Gbps 20pin Front Panel Header allows you to connect the USB-C front panel header to your PCI-E 1X slot ”

PCI-E 1X to USB 3.2 GEN1 5Gbps 20pin Front Panel Header (to Type-c Front Panel Header) + USB 3.0 19Pin Socket Expansion Card,Type-E Internal 20-pin Front Panel Connector Riser Card
Michael V.
11/16/2023 2:36:31 AM
East plug and play installation

“ Plugged right in and now I have a raft of USB ports. ”

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
Anonymous
11/11/2023 7:00:07 PM
Plug it in and it works. Just what I wanted.

“ Simple USB3.0 Add-on Card with 19/20 pin header. ”

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