Connect to ECM USB

Hello
i use wp7502 linux 3.14 legato 20.04
i connect to IoT through USB ECM.
My PC see interface Ethrnet.
when i start command lsmod on my board

root@swi-mdm9x15:/etc# lsmod
Tainted: G
can_iot 985 0 - Live 0xbf168000 (O)
softdog 2127 1 - Live 0xbf164000
vcan 1940 0 - Live 0xbf160000 (O)
mcp251x 10942 0 - Live 0xbf159000 (O)
can_raw 6136 1 - Live 0xbf154000 (O)
can_dev 7984 1 mcp251x, Live 0xbf14e000 (O)
can_bcm 11568 0 - Live 0xbf147000 (O)
can 22148 2 can_raw,can_bcm, Live 0xbf13d000 (O)
xt_hl 1246 4 - Live 0xbf139000
nf_conntrack_ipv6 8993 1 - Live 0xbf132000
nf_defrag_ipv6 12822 1 nf_conntrack_ipv6, Live 0xbf12a000
ip6table_filter 1196 1 - Live 0xbf126000
ip6_tables 10386 1 ip6table_filter, Live 0xbf11f000
xt_tcpudp 2745 9 - Live 0xbf11b000
nf_conntrack_ipv4 13764 1 - Live 0xbf113000
nf_defrag_ipv4 1285 1 nf_conntrack_ipv4, Live 0xbf10f000
ipv6 283188 16 nf_conntrack_ipv6,nf_defrag_ipv6,[permanent], Live 0xbf0b5000
xt_conntrack 2899 2 - Live 0xbf0b1000
nf_conntrack 64996 3 nf_conntrack_ipv6,nf_conntrack_ipv4,xt_conntrack, Live 0xbf098000
iptable_filter 1248 1 - Live 0xbf094000
ip_tables 11038 1 iptable_filter, Live 0xbf08d000
x_tables 13271 7 xt_hl,ip6table_filter,ip6_tables,xt_tcpudp,xt_conntrack,iptable_filter,ip_tables, Live 0xbf085000
msm_sdcc 61151 0 - Live 0xbf070000
usb_storage 40956 0 - Live 0xbf05d000
sd_mod 29330 0 - Live 0xbf050000
scsi_mod 129768 2 usb_storage,sd_mod, Live 0xbf020000
ftdi_sio 34124 0 - Live 0xbf00c000
unix 28190 1153 - Live 0xbf000000

which driver is responsible for this USB?

You can remove the usb cable and diff the lsmod command