Integrated LED charging status indicator for each USB port Charge Only! For 32 devices at the same time (even when closed) Two carrying handles on the sides. All handles are recessed Integrated ventilation system for perfect temperature adjustment 4 smooth-running castors, 2 with locking brake Integrated locking system (key included) Active ventilation system (max. noise level 31dBA, air performance: 39m³ / h) Supports all USB-PD Power Delivery voltages from 5V to 12V.(5V 4A/9V 2.1A /12V 1.7A) on Type-C ports and up to 20W per port Suitable for Microsoft Surface Go 1/2/3 and iPad Air/Pro models