Обычный pci-e. Аппаратное сжатие.
VE-7004
4-CH, H.264, PCIe, 120fps D1 Resolution, Multi-CODEC
4-CH live view, H.264 hardware compression
.120fps recording rate, support full D1 resolution
for clear images with less CPU loading
.Real time video and audio compression, no
frames lost
.Multi-CODEC intelligent encoding with constant
quality modes
.Standard PCIe card, one PC can support up to
64 channels (with VE-7016)
.Complete software development kit is available
И ещё pci на ebay
http://viewitem.eim.ebay.ru/4-CH-VA-...788236626/item