One particularly interesting Mac screen is the AudioVision 14 display. The larger Mac screens generally offer microphone and speaker jacks, rather than built-ins for these functions, giving more sophisticated users some flexibility in their choice of equipment. All Macs also come with two serial ports, and the ones on the Power Macs are GeoPort compatible for communications purposes. LocalTalk networking is built into all Macs and the Power Macs also feature built-in Ethernet support. The LC 575 has a communications slot that will accept an Ethernet card or internal modem.
Some models feature support for an external or second monitor.
But the Power Macs feature full 16-bit stereo inputs and outputs. All Macs come with a keyboard, of course, but you now have three models to chose from. The Apple Design keyboard looks a lot like a DOS PC extended keyboard, but with 15 function keys. It's hard-wired at the keyboard end of the connecting cable and the standard Apple mouse plugs into it at the back. The Apple Extended Keyboard II has the same key layout as the Design model, but it's more adjustable.