“YAMAHA CX5M Msx Computer SFGO5 !+ manuals + Data cable TESTED like fb01 dx21 dx9
I am original owner and bought this when it first came out around 1984.
Importantly, this CX5M comes with the SFG05 sound module installed, which added additional features and allows MIDI in, from any MIDI keyboard, eliminating the need for the YK series keyboards! ( as was the case with the original release with the SFG01, which did require the YK keyboard )
I used it lightly for about a year before storing it carefully in a clean dry closet where it has spent nearly 40 years !
I am not sure where my original data cassettes are, but I can assure you, this 4 op SFG05 synth
Is capable of some wild, monster FM sounds. There should be plenty of free sounds out there still. OR , for the adventurous, you can program your own sounds with a YRM 102 ROM cartridge (not included)
TESTED recently audio output only,, using external MIDI keyboard, utilizing the “call music ” command, and the factory tones played back perfectly.
This unit has a very solid build, and last time I used it to record, before I stored it, all other capabilities functioned perfectly (Cassette storage, ROM cartridges, audio and Video
output)
INCLUDES Two CX5m user manuals which have some wear and slight discoloration, but are intact, (except larger manual is missing its cover (superfluous) , AND the CASSETTE TAPE INTERFACE cable. In my use , the cassette storage and loading was highly reliable, however, there are likely utilities available for sysex storage as well, (at least there used to be ! )
To get video to a TV or monitor , I believe you would need the Yamaha VC-02 cable, or equivalent .
Unit comes in original box with inner styrofoam ends. Box has tear at “handle” and on side, with some age spots and storage discoloration. FACTORY box will be protected and shipped in a slightly larger box for secure shipping.
A rare piece of Rare Yamaha kit in exceptionally well preserved condition. ” Click here to visit listing on eBay
“Yamaha CX5M With SFG-05 Fm Module Upgrade With Midi IN And FM Voicing Cart iI. Condition is “Used”. Dispatched with eBay delivery – Packlink 2-3 days.” 
” This sale is for the Yamaha CX5M MSX Music Computer sold between 1983 and 1986. I think this was an early version of this computer and therefore think the data of manufacture is 1983 or 1984. I think this principally because it has a power brick and later versions had the transformers inside the unit. This unit was sold in Europe and is therefore configured for a 240V AC supply. A picture of the rating on the power brick is included.”
“Yamaha CX5M with keyboard and many other items, used but in good shape.. Condition is Used. Shipped with USPS Priority Mail.
” Used Yamaha CX5M Music Computer . No manual, software or any other accessories. Tested & verified working.” 
” Make a reasonable offer! All offers will be considered! Had this in storage for years, shows signs of age but works, I have included photos of it hooked up to a monitor but monitor and av cord are not included. This includes one software cartridge the keyboard and computer, power cord is built in on this model. As this is an old unit it is a final as is sale but again I have included photos to show it working, thank you in advance for your purchase!” 
“Yamaha CXSM Music Computer. In original box with book. Has not been used recently, but I have confirmed that it powers up.” 
“In excellent condition, tested and fully working, comes with AV Cable !”
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“Hey All, I’m cleaning out my closet and getting rid of a few things. Here’s a Yamaha CX5M music computer without the midi keyboard. It comes with the manual and the following cartridges:
“There is wear on the lot from use and storage. It was acquired in a storage auction sale. The keyboard was quite dirty and was mostly wiped down, but still needs a little cleaning. I couldn’t get the Cx5MII/128 to turn on. The Floppydisk Drive FD-05U lit up and powered on when I plugged it in. This listing is being sold FOR PARTS OR REPAIR with NO RETURNS. ”