Sata; Figure 14 Sata Connector - Emerson COM Express Carrier Design Manual

7 SATA

Support for up to four SATA ports is defined on the COM Express A-B connector. Support for a
minimum of two ports is required for all module types. The COM Express Specification allows for both
SATA-150 and SATA-300 implementations. Constraints for SATA-300 implementations are more
severe than those for SATA-150. The COM Express Specification addresses both in the section on
insertion losses. SATA devices can be internal to the system or external. The eSATA specification
defines the connector used for external SATA devices. The eSATA interface must be designed to
prevent damage from ESD, comply with EMI limits, and withstand more insertion/removals cycles than
standard SATA. A specific eSATA connector was designed to meet these needs. The eSATA connector
does not have the L-shaped key, and because of this, SATA and eSATA cables cannot be interchanged.
Figure 13 SATA Connector
COM Express Carrier Type 2
Design Guide
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