The Compact Electronics Bay Specification (CEB) as well as EEB, MEB and '
TEB
'' ("Thin Electronics Bay") are standard form factors for dual or multi processor

motherboard A motherboard (also called mainboard, main circuit board, mb, mboard, backplane board, base board, system board, logic board (only in Apple computers) or mobo) is the main printed circuit board (PCB) in general-purpose computers and other expand ...

s defined by the

Server System Infrastructure Server may refer to: Computing *Server (computing), a computer program or a device that provides functionality for other programs or devices, called clients Role * Waiting staff, those who work at a restaurant or a bar attending customers and su ...

(SSI) Forum. The specification is intended for value servers and

workstation A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by a single user, they are commonly connected to a local area network and run multi-user operating systems. The term ''workstat ...

s based on the Intel

Xeon Xeon ( ) is a brand of x86 microprocessors designed, manufactured, and marketed by Intel, targeted at the non-consumer workstation, server, and embedded system markets. It was introduced in June 1998. Xeon processors are based on the same arc ...

, and

AMD Epyc Epyc is a brand of multi-core x86-64 microprocessors designed and sold by AMD, based on the company's Zen microarchitecture. Introduced in June 2017, they are specifically targeted for the server and embedded system markets. Epyc processors shar ...

processors (X399/C600 chipsets) The SSI CEB specification was derived from the EEB and

ATX ATX (Advanced Technology eXtended) is a motherboard and power supply configuration specification developed by Intel in 1995 to improve on previous de facto standards like the AT design. It was the first major change in desktop computer enclo ...

specifications. SSI CEB motherboards have the same IO connector area and many of the same motherboard mounting holes as ATX motherboards, although SSI CEB motherboards are larger in size than ATX motherboards and have different processor mounting holes. The rear panel aperture is identical to the EEB and ATX specification and expansion cards mounted on an SSI CEB motherboard appear much the same as they would on an ATX motherboard. To standardize thermal behavior, processor position is defined, including primary and secondary processor identification. For motherboards with only one processor installed, it is recommended the primary

processor socket In computer hardware, a CPU socket or CPU slot contains one or more mechanical components providing mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows for placing and replacing the centr ...

be populated first.

Gallery

ASUS DSBV-D.jpg, ASUS DSBV-D supports two Dual-Core / Quad-Core Intel Xeon 5000/5100/5300.
SSI CEB 1.1, 12" × 10.5" Asus KFN4-D16 R0027156.jpg, ASUS KFN4-D16 supports two AMD Dual-Core-

Opteron Opteron is AMD's x86 former server and workstation processor line, and was the first processor which supported the AMD64 instruction set architecture (known generically as x86-64 or AMD64). It was released on April 22, 2003, with the ''SledgeHa ...

.

SSI EEB 3.61, 12" × 13" 2008Computex Tyan M4985-E.jpg,

Tyan Tyan Computer Corporation (泰安電腦科技股份有限公司; also known as Tyan Business Unit, or TBU) is a subsidiary of MiTAC International, and a manufacturer of computer motherboards, including models for both AMD and Intel processors. Th ...

M4985-E supports four
AMD Quad-Core-

.

SSI MEB 16.2" × 13"

External links

ssiforum.org - Server System Infrastructure (SSI) Forum
{{Computer form factors Motherboard form factors