Netgear R6300 v2

{{Infobox Embedded System
 * image1            = Netgear AC1450.png
 * image1_size       = 150px
 * caption           = R6300 Smart WiFi Router
 * caption2          =
 * pp                =
 * sp                = https://www.netgear.com/support/product/R6300v2
 * dl                = ftp://downloads.netgear.com/r6300v2/
 * wikidevi          =
 * wikipedia         =
 * ddwrtsupport      =
 * openwrtsupport    =
 * tomatosupport     =
 * gargoylesupport   =


 * brand             = Netgear
 * model             = R6300
 * submodelappend    =
 * submodel          =
 * revision          = v2
 * subrevision       =
 * model_part_num    =
 * wlclass           = AC1750
 * series            =
 * type              = wireless router
 * sernum            =
 * fcc_id            = PY313200227
 * icid              = 4054A-13200227
 * us_id             =
 * boardid           = U12H240T00
 * ecc_id            =


 * cpu1brand         = Broadcom
 * cpu1model         = BCM4708A0
 * cpu1modelfull     = BCM4708A0;ARMv7-A;
 * cpu1_cores        = 2
 * cpu1_type         = ARM
 * armrev1           = Cortex-A9 (v7-A}
 * cpu1spd           = 800 MHz
 * bus               =


 * flash1type        =
 * fla1_num          =
 * fla1chipbrand     = Samsung
 * fla1chipmodel     = K9F1G08U0D-SCB0
 * fla1chipmodelfull =
 * flash1size        = 128
 * flash1maxsize     =


 * ram1type          =
 * ram1type1         =
 * ram1spd           =
 * ram1size          = 256
 * ram1chipbrand     = Samsung
 * ram1chipmodel     = K4B1G1646G-BCH9
 * ram1chipmodelfull =
 * ram1_num          =
 * nvramsize         =


 * eth_cpu           = true
 * sw_cpu            = true
 * wan_ports         = 1
 * wan_speed         = 1GbE
 * lan_ports         = 4
 * lan_speed         = 1GbE
 * ethstandard       =
 * portbasedvlan     =
 * 802.1qvlan        =
 * auto_mdix         =
 * sup_jumbo         =
 * ethoui            = 44:94:FC
 * oui               = 44:94:FC


 * bootwait          =
 * stock_bootloader  = CFE
 * stock_bl_version  =
 * stock_bl_dist     =
 * stock_os          = Linux
 * stock_os_kern     = 2.6.22
 * stock_os_sdk      =


 * exp_if_types      = USB 2.0, USB 3.0
 * exp_sim_num       =
 * exp_pcmcia_num    =
 * exp_expcard_num   =
 * exp_minipci_num   =
 * exp_minipcie_num  =
 * exp_usb_num       = 2
 * exp_cf_num        =
 * exp_sdmmc_num     =
 * exp_ide_num       =
 * exp_ata_num       =
 * exp_sata_num      =
 * exp_esata_num     =
 * exp_parallel      =
 * exp_sfp_num       =
 * exp_M.2           =
 * exp_hdmi_num      =
 * usb_hub           =


 * pwr_volt_type     = VDC
 * pwr_vdc           = 12
 * pwr_amp_dc        = 2.5
 * pwr_conn          = barrel
 * pwr_barrel_outer  =
 * pwr_barrel_inner  =
 * pwr_barrel_len    =
 * pwr_pol           =


 * serial            =
 * jtag              =

5GHz Power Amplifier IC;Skyworks;SE5003L1;5003L1, 218BN, 1219 MY;3;
 * specialfeat       =
 * flags             = boot log
 * addchip           = 2.4GHz Power Amplifier IC;Skyworks;SE2528L;SiGe, 2528L, 215DC;3; ,,,
 * 802dot11_protocols = abgn+ac


 * defaulip          = 192.168.1.1
 * defaultlogin      = admin
 * defaultpass       = password
 * defaultssid       =
 * defaultssid_regex =
 * default_ch        =
 * manuf             = Foxconn
 * manuf_model       = U12H240
 * manuf_rev         = T00
 * is_manuf          = No
 * tpfirmware        = DD-WRT, Tomato (Shibby), FreshTomato-ARM


 * availability      = common
 * eoldate           =
 * fccapprovdate     = 03/26/2013
 * estreldate        = 06/28/2013
 * estprice          =
 * upc               =
 * ean               =
 * dx_sku            =
 * newegg            =
 * asin              = B00EM5UFP4
 * asin_country      = US
 * asin2             = B00EM5UFP4
 * asin_country2     = GB
 * countrymanuf      = China, Vietnam


 * buttons           =
 * led               =
 * dimensions        =
 * weight            =


 * rad1chip1brand    = Broadcom
 * rad1chip1model    = BCM4360
 * rad1chip1modelfull =
 * rad1oui           =
 * rad1_ant_conn     = U.FL
 * rad1txchains      = 3
 * rad1rxchains      = 3
 * rad1sstreams      = 3
 * rad1stand         = IEEE 802.11a/n/ac
 * rad1ac            = 1300
 * rad1n             = 450
 * rad1a             = 54
 * rad1freq          = 5
 * rad1correv        =
 * rad1cap           =


 * rad2chip1brand    = Broadcom
 * rad2chip1model    = BCM4331
 * rad2chip1modelfull =
 * rad2oui           =
 * rad2_ant_conn     = U.FL
 * rad2txchains      = 3
 * rad2rxchains      = 3
 * rad2sstreams      = 3
 * rad2stand         = IEEE 802.11b/g/n
 * rad2n             = 450
 * rad2g             = 54
 * rad2b             = 11
 * rad2freq          = 2.4
 * rad2correv        =
 * rad2cap           =

}}

Overview

 * OEM: Foxconn (Ambit) U12H240T00

Specifications
The FCC photos for this device show space for a single RAM chip..
 * which is a Samsung K4B1G1646G (128MB) in those photos.

The FCC docs also show the device labeled as the Netgear AC1450.
 * This device is presumably using a BCM4708 series SoC.

The R6300v2 has a single USB 3.0 port and a single USB 2.0 port.

Serial Pinouts
J252 (RX) (TX) (GND) (3.3V) pin4 pin3  pin2  pin1