What is the maximum number of devices that you can connect through Universal Serial Bus (USB) on a PC with a single USB host controller?
1. 63
2. 126
3. >>127
4. 4
Explanation : You can connect up to 127 USB devices to a PC with a single USB host controller. A PC typically has two or more USB ports. Additional devices can be connected through USB hubs that provide additional device ports. There are two USB standards currently in use. USB 1.1 support data transfer up to 12 megabits per second (Mbps). USB 2.0 has three operational modes, 1.5 Mbps in low-speed mode, 12 Mbps in Full-speed mode, and 480 Mbps in High-speed mode. USB 2.0 is backward compatible with USB 1.1 devices.
FireWire (IEEE 1394), which is somewhat similar to USB 2.0, supports up to 63 devices. Most new computers include connectors for both USB and FireWire devices.
Objective: Personal Computer Components
