diff --git a/napalm_proxmox/driver.py b/napalm_proxmox/driver.py
index 6db3640..d45ebd4 100644
--- a/napalm_proxmox/driver.py
+++ b/napalm_proxmox/driver.py
@@ -384,19 +384,16 @@ class ProxmoxDriver(
                 serial = lines[3].strip()
 
                 _bad = {"none", "n/a", "not specified", "to be filled by o.e.m."}
-                pv_ok = (
+                pv_usable = (
                     product_version
                     and product_version.lower() not in _bad
                     and product_version != product_name
+                    # Only prefer product_version when it contains a space —
+                    # that indicates a human-readable marketing name like
+                    # "ThinkCentre M910x" rather than a part code like "J26843-409".
+                    and " " in product_version
                 )
-                # Use product_version as model when product_name looks like a
-                # raw type code (Lenovo style: all uppercase letters and digits)
-                import re as _re
-                pn_is_code = bool(_re.fullmatch(r"[A-Z0-9]+", product_name))
-                if pn_is_code and pv_ok:
-                    model = product_version
-                else:
-                    model = product_name
+                model = product_version if pv_usable else product_name
         except Exception as exc:
             logger.debug("Failed to read DMI info via SSH: %s", exc)