Apple Ethernet Twisted Pair Transceiver (c. 1995)

The Apple Ethernet Twisted Pair Transceiver used the Apple Attachment Unit Interface (AAUI) to connect Ethernet transceivers to computers. This transceiver used a 10BASE-T connector. This version of the transceiver used an RJ45 port.

Apple computers with an AAUI port included Macintosh Quadra, Centris, PowerBook 500, Duo Dock II (for PowerBook Duo), early Power Macintosh computers, and some Macintosh LC and Performa computers.

When I first began as a Technology Coordinator for a school district, our Macintosh LC520 network was connected entirely using Apple Ethernet Twisted Pair Transceiver devices and BNC connectors in a daisy-chain setup. When we updated the computer lab, we stopped using the AAUI port and installed 10BASE-T cards in the computers.

Source: Wikipedia.org

Apple PlainTalk Microphone (transparent, unopened, 1999)

This was Apple’s second PlainTalk Microphone product. This version was introduced with the AV models of the Macintosh Quadra series in 1993 and sold separately. This microphone was designed to be placed on the top of a CRT screen. The long connector was used to power the microphone.

This version of the Apple Plaintalk Microphone was cast in transparent plastic to match the G3 Blue & White tower. This microphone was included with a G3 Blue & White tower and was never opened.

The following Macs supported the PlainTalk Microphone according to Apple: Quadra 605,630,660,840; Centris 660; LC 475, 605, 520, 550, 575, 580, 630; Performa 475, 476, 520, 550, 560, 575, 577, 578, 580, 588, 630, 631, 635, 636, 637, 638, 640, 5200, 5210, 5115, 5220, 5260, 5270, 5280, 5300, 5320, 5400, 5410, 5420, 5430, 5440, 6110, 6112, 6115, 6116, 6117, 6118, 6200, 6205, 6210, 6214, 6216, 6218, 6220, 6230, 6260, 6290, 6300, 6310, 6320, 6360, 6400, 6410, 6420; Network Server 500, 700; Workgroup Server 6150, 7250, 7350, 8150, 8550, 9650; G3 Server 233, 266; G4 Server 500MHz; PowerMac 4400, 5200, 5260, 5300, 5400, 5500, 6100, 6200, 6300, 6400, 6500, 7100, 7200, 7215, 7220, 7300, 7500, 7600, 8100, 8115, 8200, 8500, 8515, 8600, 9500, 9515, 9600; PowerMac G3 Beige Desktop & Mini Tower, G3 Blue & White; Twentieth Anniversary Mac; iMac G3; and PowerMac G4 PCI, AGP, GE.

Sources: applemacparts.co.uk, Wikipedia.org