The EPIC motherboard form factor is a larger version of the 3.5 inch. 

£ 280.00 280.0 GBP Excl. VAT
£ 40.81 40.81 GBP Excl. VAT
£ 240.00 240.0 GBP Excl. VAT
£ 410.00 410.0 GBP Excl. VAT
£ 630.00 630.0 GBP Excl. VAT
£ 510.00 510.0 GBP Excl. VAT
£ 430.00 430.0 GBP Excl. VAT