usb转真并口，德国原版的Altium6.7(protel),原理图。和原版完全一样。-true parallel port usb switch, the German original Altium6.7 (protel), schematic diagram. And exactly the same as the original.

最新USBASP下载器固件，极其稳定，德国朋友发来的，亲测好用，无兼容问题，至今未出现固件损坏情况。-The latest USBASP download firmware, very stable, German friends sent, pro test use, no compatibility issues, so far no firmware damage.