An explansion board you insert into your computer so the computer can be connected to a network
StarTech.com 7 Port PCI USB Card Adapter - TAA

StarTech.com 7 Port PCI USB Card Adapter - TAA

StarTech.com
£22.99
ASUS Hyper M.2 x16 Gen5 Card interface cards/adapter Internal

ASUS Hyper M.2 x16 Gen5 Card interface cards/adapter Internal

ASUS
£76.99
ASUS IPMI EXPANSION CARD-SI interface cards/adapter Internal RJ-45, VGA

ASUS IPMI EXPANSION CARD-SI interface cards/adapter Internal RJ-45, VGA

ASUS
£94.99
ASUS ThunderboltEX 4 interface cards/adapter Internal Mini DisplayPort, PCIe, Thunderbolt, USB 2.0, USB 3.2 Gen 2 (3.1 Gen 2)

ASUS ThunderboltEX 4 interface cards/adapter Internal Mini DisplayPort, PCIe, Thunderbolt, USB 2.0, USB 3.2 Gen 2 (3.1 Gen 2)

ASUS
£88.99