# Differences between USRP series

**URL:** <https://www.ruby-forum.com/t/differences-between-usrp-series/214681>\
**Category:** GNU Radio\
**Created:** [December 9, 2011, 8:45am UTC](https://www.ruby-forum.com/t/differences-between-usrp-series/214681 "2011-12-09T08:45:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\
**Post date:** [December 9, 2011, 8:45am UTC](https://www.ruby-forum.com/t/differences-between-usrp-series/214681/1 "2011-12-09T08:45:17Z")

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There are various kind of USRP series, USRP1, USRP2, E100, B100, and  
N200.

At a glance I could find some differences between them.

1. USB connection and Ethernet connection which determines the data rate  
between the USRP and a PC.  
(and it also makes difference when addressing USRP in GNU Radio.)
2. the number of slots for daughter boards. USRP1 has two and N200 has  
one,  
and so on.
3. E series are for the embedded systems.
4. existence of MIMO expansion
5. USRP input and output / interpolation and decimation rate

etc.

and there are many other differences, of course.

Are there any differences that I’ve missed?  
And I’m curious how can I use the MIMO expansion after connecting two  
USRPs  
with MIMO cable.

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**Author:** ![Songsong\_G](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/49beb7/32.png) [@Songsong\_G](https://www.ruby-forum.com/u/Songsong_G)\
**Post date:** [December 9, 2011, 5:32pm UTC](https://www.ruby-forum.com/t/differences-between-usrp-series/214681/2 "2011-12-09T17:32:51Z")

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Seokseong Jeon,

Your summary captures some of the differences between the USRP’s. If  
you haven’t already, take a look at the link below for more details.  
One thing to note is the USRP2 has been discontinued in favor of the  
N200/N210 series.

[http://www.ettus.com/faq](http://www.ettus.com/faq)

If you are interested in experimenting with MIMO, we recommend the  
N200/210. The link below summarizes synchronization methods with the  
UHD API. GNU Radio and GRC also provide very straight forward methods  
to enable MIMO.

[http://files.ettus.com/uhd\_docs/manual/html/sync.html](http://files.ettus.com/uhd_docs/manual/html/sync.html)

Thank you for your interest!

-J