显示卡测试计数器，AGP 或 PCI 卡测试时用来限制测试卡和插槽中间媒介的测试寿命。-Display card test counter, AGP, or PCI card test used to test life limit of the test card and slot intermediary.

The PCAN-USB adapter allows the connection of a CAN bus to an USB interface of an IBM compatible PC. It is especially suitable for use with notebook computers since these usually do not have an ISA or PCI slot. With the help of this adapter, any P