An explansion board you insert into your computer so the computer can be connected to a network
StarTech.com 2 Port Low Profile SATA to eSATA Plate Adapter

StarTech.com 2 Port Low Profile SATA to eSATA Plate Adapter

StarTech.com
£11.99
StarTech.com Dual M.2 PCIe SSD Adapter Card, PCIe x8 / x16 to Dual NVMe or AHCI M.2 SSDs, PCI Express 4.0

StarTech.com Dual M.2 PCIe SSD Adapter Card, PCIe x8 / x16 to Dual NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required - Windows/Linux Compatible - TAA

StarTech.com
£74.99
Epson UB-U02III

Epson UB-U02III

Epson
£92.99
Epson UB-S01

Epson UB-S01

Epson
£39.99
Epson UB-U06

Epson UB-U06

Epson
£92.99
Epson UB-U05

Epson UB-U05

Epson
£59.99
Epson UB-P02II

Epson UB-P02II

Epson
£39.99
Epson UB-U03II

Epson UB-U03II

Epson
£92.99
Epson UB-S09

Epson UB-S09

Epson
£39.99
Epson SIDM Serial I/F board, no buffer type-B plug-in card RS232D/20mA

Epson SIDM Serial I/F board, no buffer type-B plug-in card RS232D/20mA

Epson
£80.99
StarTech.com 4-Slot PCIe Expansion Chassis with PCIe x2 Host Card, PCIe 2.0 - 10Gbps, External PCIe Slots for

StarTech.com 4-Slot PCIe Expansion Chassis with PCIe x2 Host Card, PCIe 2.0 - 10Gbps, External PCIe Slots for Desktops/Servers, PCI Express Expansion Box/Adapter, 4 PCIe x1 Slots - TAA

StarTech.com
£387.99
Honeywell 50131401-001 interface cards/adapter

Honeywell 50131401-001 interface cards/adapter

Honeywell
£252.99