iMac Pro comes with a built-in 10Gb Nbase-T Ethernet port, and Mac mini (2018) offers 10Gb Ethernet as an optional configuration. This port supports 1Gb, 2.5Gb, 5Gb, and 10Gb Ethernet using RJ-45 connectors and standard twisted-pair copper cabling up to 100 meters (328 feet) in length.
When you connect your iMac Pro or Mac mini to another device via Ethernet, the highest possible speed is negotiated automatically. The speed depends on the capabilities of the device and the Ethernet cable. For example, if the device that you connect to is 10 Gbps-capable — and the cable you use can support the speed — your Mac and the device can transfer data at 10 Gbps.
The cheapest one that works. Any ethernet cable should work like any other assuming it is not damaged. The fact that you are using a Mac is irrelevant. Ethernet cables are sold to adhere to certain standards. The most common being CAT-5, CAT-5e. The speed depends on the capabilities of the device and the Ethernet cable. For example, if the device that you connect to is 10 Gbps-capable — and the cable you use can support the speed — your Mac and the device can transfer data at 10 Gbps. Learn how the type of cable that you use can affect Ethernet speeds in the table below. The cheapest one that works. Any ethernet cable should work like any other assuming it is not damaged. The fact that you are using a Mac is irrelevant. Ethernet cables are sold to adhere to certain standards. The most common being CAT-5, CAT-5e.
Learn how the type of cable that you use can affect Ethernet speeds in the table below. The speeds shown are for cables up to 100 meters (328 feet) in length, unless otherwise specified.
| 10BaseT | 100BaseT | 1 Gbps | 2.5 Gbps | 5 Gbps | 10 Gbps | |
|---|---|---|---|---|---|---|
| Category 5e Ethernet cable | Not supported | Supported | Supported | Supported | Supported | Not supported |
| Category 6 Ethernet cable | Not supported | Supported | Supported | Supported | Supported | Supported up to 55 m (180 feet) in length |
| Category 6a Ethernet cable | Not supported | Supported | Supported | Supported | Supported | Supported |
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- When you use Windows via Boot Camp on your iMac Pro or Mac mini, it's best to leave your Ethernet port speed set to Autosense. If you configure the link speed manually in the Network and Internet Control Panel within Windows, you might get Ethernet speeds that reach a maximum of 1 Gbps.
- If the data transfer speeds between your Mac and another device connected through Ethernet are lower than you expect, first make sure that you're using a supported cable type and length. Then check with the device's manufacturer to make sure its firmware is up to date.