Hi Gordon, It really doesn't matter, since the Milestone will accept SD or SDHC cards, provided you have the latest firmware. HC tend to be higher capacity and faster for transfer. All the best Steve -- Computer Room Services 77 Exeter Close Stevenage Hertfordshire SG1 4PW Tel: +44(0)1438-742286 Mob: +44(0)7956-334938 Fax: +44(0)1438-759589 Email: steve@xxxxxxxxxxxxxx Web: http://www.comproom.co.uk -----Original Message----- From: access-uk-bounce@xxxxxxxxxxxxx [mailto:access-uk-bounce@xxxxxxxxxxxxx] On Behalf Of Gordon Atkinson Sent: 01 April 2013 15:08 To: Access-UK Subject: [access-uk] Memory Cards Hi Folks, I am looking to buying some extra memory cards for the Milestone 312. I had a look on Amazon but find the various numbers confusing; for example: SanDisk SDSDB-032G-B35 32GB Class 4 SDHC Memory Card I am familiar with the gigabyte and high capacity but not the class numbers. I would be grateful if anyone could explain the various options. It might be better to write to me off list. Many thanks. Gordon Atkinson ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq