Latitude 5411 - CentOS 7 NIC driver

Have you all had any success installing Centos 7 on a Latitude 5411 and getting it to recognize the NIC?  For us, it will not recognize the NIC from the CentOS-7-x86_64-DVD-2009.iso.  

If we hook up a WD15 docking station, it does see this NIC.  We run "yum update" on the machine, but still haven't had success with the driver.  

$ nmcli dev
DEVICE TYPE STATE CONNECTION
enp57s0u1u2 ethernet connected enp57s0u1u2
virbr0 bridge connected virbr0
wlo1 wifi unavailable --
vmnet1 ethernet unmanaged --
vmnet8 ethernet unmanaged --
lo loopback unmanaged --
virbr0-nic tun unmanaged --

If I run a "ifconfig -a" it looks like CentOS is seeing the NIC on the laptop, as well as the NIC on the docking station:

virbr0-nic: flags=4098 mtu 1500
ether xx:xx:xx:xx:xx  txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

/etc/sysconfig/network-scripts/ifcfg-lo   shows that:

$ cat ifcfg-lo
DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

A coworker said he had some success with some Precision laptops, but of course these are Latitudes.  He said he added the elrepo and installed the "kernel-ml" package.  I tried his how-to, but cannot get it to work for our 5411's.  Do any of you have any advice? 

Thank you.