Powershell - Change variables based on CSV file - variables

Question

I'm attempting to use a CSV file for automatic computer naming with powershell. Our Computer names carry general model numbers which tell me the actual type of computer. For instance, Model # 2537CU1 is a Lenovo T410. I want to pull the model number and change the variable to T410.
I can already get the model number with a get-wmiobject call to the computersystem class, but to create a variable with the "type" data, like T410 I'm having to use a bunch of If, and elseif statements. This is due to the sheer number or models/types we support. My goal is to have a CSV to edit instead of the script itself. I just want the corresponding Model to get the right variable for the "type" of machine.
So here's where my head is so far and I know I'm way off:
$model = Get-WmiObject -Class Win32_ComputerSystem | select -ExpandProperty Model
$modelCSV = "0"
$typeCSV = "0"
Import-Csv -Path "C:\TechDiv\ComputerModel_Type.csv" |
ForEach-Object {
$modelCSV += $_.Model
$typeCSV += $_.Type
}
if ($modelCSV -like $model)
{
$model = $typeCSV
}
Where my CSV looks like this:
Model, Type
0401B7U, A70Z
0401R6U, A70Z
1165A3U, A70Z
25521H8, 0E31
2552Ck1, 0E31
7360, 0M58
7483, 0M58
7630, 0M58
Ultimately my computer naming script will concatenate the model and serial number for easy collections and updates. Example with model/serial name (0's pad the left serial to fill 10 spaces): T410000R84D06Z

Answer 1

Here is how I would do it:
$model = Get-WmiObject -Class Win32_ComputerSystem | select -ExpandProperty Model
$modelCSV = "0"
$typeCSV = "0"
$modelList = Import-Csv -Path "C:\TechDiv\ComputerModel_Type.csv" |
$modelName = $modelList | Where-Object{$_.Model -eq $model}

Answer 2

I'd load that CSV into a hash table:
$ModelHash = #{}
Import-Csv -Path "C:\TechDiv\ComputerModel_Type.csv" |
ForEach-Object { $ModelHash[$_.Model = $_.Type }
$model = Get-WmiObject -Class Win32_ComputerSystem | select -ExpandProperty Model
$Type = $ModelHash[$Model]