How many USB-Blaster II download cables can be connected simultaneously to a USB port? - How many USB-Blaster II download cables can be connected simultaneously to a USB port? Description Up to 127 USB-Blaster™ II download cables can be connected to a single USB root hub. However, only one USB-Blaster II download cable can be active at any given time. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']