All 4 of the USB ports of the AnywhereUSB TS44 model can connect to one computer at a time, giving that computer access to all of the USB devices attached to all 4 ports. The 4 USB ports cannot be "split up".
However, the 4 serial ports can be "split up". For example, you can have one computer connected to serial port #1, another computer connected to serial port #2, and so forth. Or you could have one computer connected to serial ports #1 and 2, and another computer connected to the remaining serial ports #3 and 4.
Think of the 4 serial ports as being separate, whereas the 4 USB ports are a group. It might also help to think of the AnywhereUSB TS44 as two products in the same box, where one of the products is a 4-port USB-over-IP hub, and the other is similar (but not identical) to a Digi ConnectPort TS 4.
NOTE: The 4 serial ports on an AWUSB TS44 model only function in "RealPort" mode, where the Digi RealPort driver is installed on a computer, and the serial ports are accessible by COM port numbers (using Windows as an example). Other serial port modes that some other Digi products support, such as TCP/UDP sockets are not supported with the AnywhereUSB TS44.
Related KB articles:
Can multiple host computers connect to an AnywhereUSB at the same time?
10-pin RJ45 serial port pinout for the AnywhereUSB TS44
Jan 16, 2024