No this doesn't work. The device you linked to is for reading other media cards. It will not read the Janome memory cards. As Jim said... The pins are different and putting a Janome memory card into the device's slots would not match up the correct pins inside the reader/writer.
When Janome stopped making memory cards with designs for the machines, they came out with a CD that had all the designs on it from all the cards, starting with those from the MC8000 model. Check with a dealer or eBay for one of the CDs.
Tracy in Nashville, TN
Martha Pullen Licensed Educator