... a four-way wireless voice cards, slot type is PCI-E socket, line PCI-E 2.2 standards. It is mainly used in wireless, PSTN and ... or FXS module in each channel.5,The PCI-E slot is based on PCIE2.2.6, Support the reversal function of polarity ... 2.6.xSize and Weight1, Size(L*W*H): 210*105*24MM2, Weight: 305gThe environmental instructions for using:1, Temperature Operation: 0 ...