SPARCstation 5 or SS5 (code-named Aurora) is a workstation introduced by Sun Microsystems in March 1994. It is based on the sun4m architecture, and is enclosed in a pizza-box chassis. Sun also offered a SPARCserver 5 without a framebuffer. A simplified, cheaper version of the SS5 was released in February 1995 as the SPARCstation 4. Sun also marketed these same machines under the "Netra" brand, without framebuffers or keyboards and preconfigured with all the requisite software to be used as web servers. An estimated 400,000+ SPARCstation 5s were sold. Specifications Release Price Sun rolled out the SPARCstation 5 for . CPU support The SPARCstation 5 may incorporate one of the following processors: 70, 85, or 110 MHz Sun Microsystems microSPARC-II, or a 170 MHz Fujitsu Microelectronics, Inc. (FMI) TurboSPARC. Fujitsu also provided a 160 MHz TurboSPARC CPU Upgrade Kit for upgrading 70, 85 and 110 MHz microSPARC-II models. The SPARCstation 5 has no MBus and thus is limited to use as a single-processor machine. Memory The SPARCstation 5 has eight DSIMM slots for memory expansion. Slots can be filled individually with either 8 MB or 32 MB modules giving a maximum of 256 MB memory. The SPARCstation 4 uses the same memory. Disk drives The SPARCstation 5 can hold two internal 80-pin SCA, single-ended, fast-narrow SCSI drives, a SCSI CD-ROM drive and a floppy. It also supports external SCSI devices. There is no IDE/ATAPI support. Network support The SPARCstation 5 comes with an on-board AMD Lance ethernet chipset providing 10BASE-T networking as standard and 10Base2 and 10Base5 via an AUI transceiver. A 10/100Mbit/s hme "Happy Meal" NIC can be added for faster connections. The OpenBoot ROM is able to boot from network, using RARP and TFTP. Like all other SPARCstation systems, the SS5 holds system information such as MAC address and serial number in NVRAM. If the battery on this chip dies, then the system will not be able to boot until the NVRAM is reprogrammed. Expansion / AFX The SPARCstation 5 has three SBus expansion slots which are typical of Sun computer equipment of this era. The third of these shares its expansion backplate and physical space with a special AFX connector which was unique to the SPARCstation 5. Only one card was released for this slot, known as the S24 or TCX. This was a framebuffer that allowed the use of 24-bit colour graphics instead of the 8-bit