Acer Aspire 9510 - Manual (Page 96)

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Consumer Infrared (CIR)
The computer’s Consumer Infrared (CIR) port is used to receive signals from your
remote control, or other devices with CIR capability.
Fast Infrared (FIR)
The computer's Fast Infrared (FIR) port allows you to do wireless data transfer
with other IR-aware computers and peripherals such as PDAs, mobile phones,
and infrared printers. The infrared port can transfer data at speeds of up to 4
Mbps at a distance of up to one meter.
Universal Serial Bus (USB)
The USB 2.0 port is a high-speed serial bus which allows you to connect USB
peripherals without taking up precious system resources.