PUBLISHED SFF-8661 Rev 2.5
QSFP+ 4X Module Page 1
Copyright © 2018 SNIA. All rights reserved.
SFF specifications are available at http://www.snia.org/sff/specifications
SFF-8661
Specification for
QSFP+ 4X Module
Rev 2.5 June 22, 2018
Secretariat: SFF TA TWG
Abstract: This specification defines the mechanical specifications for the QSFP+ 4x
Module Formfactor.
The mechanical dimensioning allows backwards mechanical compatibility between QSFP+
4X modules plugged into most QSFP+ cages which have been implemented to SFF-8436.
The EMI leakage is expected to be similar to that when QSFP+ modules and cages are
mated.
Superior EMI performance can only be expected with mated combinations of modules
compliant with this specification and cages compliant with SFF-8663 or SFF-8683.
This specification provides a common reference for systems manufacturers, system
integrators, and suppliers.
This specification is made available for public review, and written comments are
solicited from readers. Comments received by the members will be considered for
inclusion in future revisions of this specification.
The description of a connector in this specification does not assure that the
specific component is actually available from connector suppliers. If such a
connector is supplied it must comply with this specification to achieve
interoperability between suppliers.
POINTS OF CONTACT:
Jay Neer
Molex, LLC.
2222 Wellington Court
Lisle, IL 60532
Ph: 561-251-8016
jay.neer@molex.com
Dan Gorenc
TE Connectivity
3101 Fulling Mill Rd
Middletown, PA 17057
Ph: 717-986-3518
daniel.gorenc@te.com
Chairman SFF TA TWG
Email: SFF-Chair@snia.org
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