Dell Inspiron 14R SE (7420, Mid 2012) - Manual (Page 3)

Memory
Inspiron
14R-5420/7420/
M421R-5425 Inspiron
15R-5520/7520/
M521R-5525
Connectors two internally-accessible
DDR3 SODIMM sockets two internally-accessible
DDR3 SODIMM sockets
Capacities 2 GB and 4 GB 2 GB and 4 GB
Minimum memory 2 GB 2 GB
Maximum memory 8 GB 8 GB
Memory type 1600 MHz DDR3 SODIMM 1600 MHz DDR3
SODIMM
Memory configurations
supported 2 GB, 4 GB, 6 GB, and
8 GB 2 GB, 4 GB, 6 GB, and
8 GB
Communications
Inspiron
14R-5420/7420/
M421R-5425 Inspiron
15R-5520/7520/
M521R-5525
Modem (optional) external V.92 56 K USB
modem external V.92 56 K USB
modem
Network adapter 10/100 Ethernet LAN on
system board
(Inspiron 14R-5420,
Inspiron M421R-5425)
10/100/1000 Ethernet
LAN on system board
(Inspiron 14R-7420) 10/100 Ethernet LAN on
system board
(Inspiron 15R-5520,
Inspiron M521R-5525)
10/100/1000 Ethernet
LAN on system board
(Inspiron 15R-7520)
Wireless WLAN, WiMax, Wi-Fi
abgn/bgn, Wi-Di
(optional), and Bluetooth
wireless technology WLAN, WiMax, Wi-Fi
abgn/bgn, Wi-Di
(optional), and Bluetooth
wireless technology