ive had great luck with the usb to serial cables I buy and make so far and they work well with the MD series, even with the drivers it usually just downloads from windows update and works very easily.
Cable on the far right is the PS2 to RJ45 for the MDs I have
Other adapters are APC UPS/PDUs, switches and routers, and the blue cable is a calypso systems amplifier adapter. It works perfectly for everything I've tried it on and needed to make a cable for. I've been tired of carrying around numerous cables for proprietary systems and instead made this small kit.