What is BNC interface?

BNC interface can isolate video input signals and reduce mutual interference between signals. The signal bandwidth is larger than that of ordinary 15-pin D interface, which can achieve better signal response effect. The network card of this interface is used in Ethernet or token network with thin coaxial cable as transmission medium. At present, this interface type of network card is relatively rare, mainly because there are few networks with thin coaxial cable as transmission medium. The figure shows two BNC interface network cards with ISA and PCI bus interfaces respectively.