这是一个电脑设备带宽列表，列出一般电脑设备的信道容量，即转输数据的 (理论上) 最高转送速度，以千比特每秒(kbit/s/kbps)、百万比特每秒(Mbit/s/Mbps)、十亿比特每秒(Gbit/s/Gbps)或兆比特每秒(Tbit/s/Tbps)表示。以下每按设备的功能分组，按信道容量由小至大排列。

为方便非技术人员比较带宽的大小，每类带宽都有一个公用单位，例如电话带宽为 1.2 kbit/s，其中一种旧式调制解调器的带宽为 56 kbit/s。使用比特每秒 (bit/sec) 或字节每秒 (Byte/sec) 则视乎一般人惯用哪一个。惯用的单位在列表中以粗体表示。一般来说，并行通信接口用比特每秒 (bit/sec)，串行通信则用字节每秒 (Byte/sec)。至于类似调制解调器的设备中，基于用作分隔每一字节 (Byte) 的 和 Stop bit，一字节可能含有超过八个比特 (bit)，以下的列表已经有考虑这一点。而如果有像以太网路、SATA，与PCI Express等使用到调制技术的信道，列出的带宽速度则是表示调制后的信号速度。

This is a list of device bit rates, or physical layer information rates, net bit rates, useful bit rates, peak bit rates or digital bandwidth capacity, at which digital interfaces of computer peripheral equipment and network devices can communicate over various kinds of buses and networks. The distinction can be arbitrary between a bus, (which is inside a box and usually relies on many parallel wires), and a communications network cable, (which is external, between boxes and rarely relies on more than four wires). Many device interfaces or protocols (e.g., SATA, USB, SCSI, PCI and a few variants of Ethernet) are used both inside many-device boxes, such as a PC, and one-device-boxes, such as a hard drive enclosure. Accordingly, this page lists both the internal ribbon and external communications cable standards together in one sortable table.