* Mitsubishi MF353C-258MR REV D 1.44MB Floppy drive has been replaced with fully customised [https://gotekonrmnimbuspc38620.blogspot.com/2021/01/gotek-floppy-emulator-on-rm-nimbus-pc.html GOTEK USB Floppy Emulator] including Rotary Encoder + knob, 0.91" White OLED, Piezo sounder for authentic floppy drive noises from [https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=Gotek+Floppy+Emulator&_sacat=0&LH_TitleDesc=0&_odkw=gotek+Floppy+Emulator&_osacat=0&_sop=15 eBay]
* [https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=Seagate+ST125N&_sacat=0&_sop=15 Seagate ST125N 20MB HDD] has been replaced with [https://usingscsi2sdonrmnimbus.blogspot.com/2019/09/blog-post.html SCSI2SD] using maximum [https://drive.google.com/file/d/1SFNSB_UwxMPa9lyPCJJkMInNmFK4y1tP/view 40MB configuration setting] to get a total capacity of 120MB in three hard drive partitions - C: D: & F: out of 160MB as drive E: is totally unusable on 2GB Micro-SD card as HDD replacement
* Upgraded to [https://slimlinepc186memoryupgrade.blogspot.com/ maximum 1536K RAM onbaord] & [https://www.flickr.com/photos/34320897@N02/52765616880/in/album-72157698252174260/ Liteon Type T32170AF PSU] have been fixed with returning a faulty part - [https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=WAYCOM+330uF+35V+capacitor&_sacat=0&LH_TitleDesc=0&_odkw=WAYCOM+330uF+capacitor+35V+&_osacat=0&_sop=15 WAYCOM 330uF 35V capacitor] on Tues 2nd March 2021
* [https://www.ebay.co.uk/itm/324721460683 RM Nimbus AUX Serial Port to PC 25 Way D-Sub RS232 Cable - 2 Metres] for [https://rmpc186rs422.blogspot.com/ RM Nimbus RS422 Communication With Windows PC]