R4i SDHC V1.4.5 is dsi cartridge released from www.r4i-sdhc.com, as firmware upgrade is inaccessible for former r4i-sdhc V1.4.X, R4i-SDHC V1.4.5 has changed RAM chips for future console system update. This R4i V1.4.5 DSi chip is also system backwards compatible.
R4-DS-AU have these R4i SDHC V1.4.5 firmware upgraded for 3DS XL / 3DS console before shipping out.
Below list out which current console system R4i sdhc v1.4.5 can be used for, please check your console system version before making your order.
1x R4i SDHC V1.4.5 cart
1x USB Micro adapter (High speed 2.0)
1x Kingston Micro Memory card ( Optional )