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Difference between a X2-10G and XENPAK 10G tranceiver

Hi experts,

I was just wondering what's the differene between the X2-10G tranceiver and the XENPAK 10G tranceiver?
Physically, the Xenpak looks longer than the X2. We have a WS-X6708-10GE blade and it looks like it can only fit the X2 Tranceivers.
Does Cisco make linecards that are specific to X2 and some to XENPAK?
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typertec
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typertec
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JFrederick29Commented:
Really just the physical form factor.  X2 came after XENPAK and is a little smaller in size.  The latest standard is SFP+ which is even smaller.

Here is a XENPAK and X2 module (the 10GE module you have is XENPAK).

http://www.cisco.com/en/US/solutions/collateral/ns340/ns517/ns224/ns668/net_business_benefit0900aecd805348f3.html
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JFrederick29Commented:
Sorry, to answer your question, yes, there is a difference between the X2 and XENPAK transceivers.  Are you sure your module is a WS-6708-10GE? or is it a WS-6708-10G-3C?  Do a "show module" to confirm.  The WS-6708-10GE is XENPAK and the 6708-10G-3C's are X2.  You need to purchase an X2 or XENPAK transceiver based on which module you have.
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JFrederick29Commented:
Typo, should have been.

The WS-6704-10GE is XENPAK and the 6708-10G-3C's are X2.  You need to purchase an X2 or XENPAK transceiver based on which module you have.
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