diff --git a/py/imagefunc.py b/py/imagefunc.py
index 7b060c7..8449645 100644
--- a/py/imagefunc.py
+++ b/py/imagefunc.py
@@ -59,6 +59,22 @@ except ImportError as e:
 
 
 
+'''device selection'''
+
+
+# Shared device options for node UI dropdowns.
+# 'auto' follows ComfyUI's default device (CUDA/NPU/XPU/MPS/CPU depending on the runtime).
+DEVICE_LIST_OPTIONS = ['auto', 'cuda', 'cpu']
+
+
+def get_device(device_str: str = "auto"):
+    """Resolve a user-facing device option to a torch.device.
+    'auto' returns ComfyUI's default device (handles CUDA/NPU/XPU/MPS/CPU)."""
+    if device_str == "cpu":
+        return torch.device("cpu")
+    return comfy.model_management.get_torch_device()
+
+
 '''warpper'''
 
 # create a wrapper function that can apply a function to multiple images in a batch while passing all other arguments to the function
diff --git a/py/mask_edge_ultra_detail_v2.py b/py/mask_edge_ultra_detail_v2.py
index f78bb38..b1a2cf2 100644
--- a/py/mask_edge_ultra_detail_v2.py
+++ b/py/mask_edge_ultra_detail_v2.py
@@ -2,6 +2,7 @@ import torch
 from PIL import Image
 from .imagefunc import log, tensor2pil, pil2tensor, image2mask, expand_mask, mask_fix
 from  .imagefunc import guided_filter_alpha, histogram_remap, mask_edge_detail ,RGB2RGBA, generate_VITMatte, generate_VITMatte_trimap
+from .imagefunc import DEVICE_LIST_OPTIONS
 
 
 
@@ -13,7 +14,7 @@ class MaskEdgeUltraDetailV2:
     def INPUT_TYPES(cls):
 
         method_list = ['VITMatte', 'VITMatte(local)', 'vitmatte-base-composition-1k', 'PyMatting', 'GuidedFilter', ]
-        device_list = ['cuda','cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {
             "required": {
                 "image": ("IMAGE",),
diff --git a/py/mask_edge_ultra_detail_v3.py b/py/mask_edge_ultra_detail_v3.py
index 82747ab..e1b2a8b 100644
--- a/py/mask_edge_ultra_detail_v3.py
+++ b/py/mask_edge_ultra_detail_v3.py
@@ -2,6 +2,7 @@ import torch
 from PIL import Image
 from .imagefunc import log, tensor2pil, pil2tensor, image2mask, mask2image, expand_mask, mask_fix, gaussian_blur, pixel_spread
 from  .imagefunc import guided_filter_alpha, histogram_remap, mask_edge_detail ,RGB2RGBA, generate_VITMatte, generate_VITMatte_trimap
+from .imagefunc import DEVICE_LIST_OPTIONS
 
 
 
@@ -13,7 +14,7 @@ class MaskEdgeUltraDetailV3:
     def INPUT_TYPES(cls):
 
         method_list = ['VITMatte', 'VITMatte(local)', 'vitmatte-base-composition-1k', 'PyMatting', 'GuidedFilter', ]
-        device_list = ['cuda','cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {
             "required": {
                 "image": ("IMAGE",),
diff --git a/py/rmbg_ultra_v2.py b/py/rmbg_ultra_v2.py
index 2b41f02..433e8ba 100644
--- a/py/rmbg_ultra_v2.py
+++ b/py/rmbg_ultra_v2.py
@@ -2,6 +2,7 @@ import torch
 from PIL import Image
 from .imagefunc import log, tensor2pil, pil2tensor, image2mask, mask2image, RMBG, RGB2RGBA, mask_edge_detail
 from .imagefunc import guided_filter_alpha, histogram_remap, generate_VITMatte, generate_VITMatte_trimap
+from .imagefunc import DEVICE_LIST_OPTIONS
 
 
 
@@ -13,7 +14,7 @@ class RmBgUltraV2:
     def INPUT_TYPES(cls):
 
         method_list = ['VITMatte', 'VITMatte(local)', 'vitmatte-base-composition-1k', 'PyMatting', 'GuidedFilter', ]
-        device_list = ['cuda','cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {
             "required": {
                 "image": ("IMAGE",),
diff --git a/py/segformer_ultra.py b/py/segformer_ultra.py
index 2740225..cfee5d4 100644
--- a/py/segformer_ultra.py
+++ b/py/segformer_ultra.py
@@ -10,6 +10,7 @@ import torch.nn as nn
 import folder_paths
 from .imagefunc import log, tensor2pil, pil2tensor, mask2image, image2mask, RGB2RGBA
 from .imagefunc import guided_filter_alpha, mask_edge_detail, histogram_remap, generate_VITMatte, generate_VITMatte_trimap
+from .imagefunc import DEVICE_LIST_OPTIONS
 
 
 class SegformerPipeline:
@@ -70,7 +71,7 @@ class Segformer_B2_Clothes:
     @classmethod
     def INPUT_TYPES(cls):
         method_list = ['VITMatte', 'VITMatte(local)', 'vitmatte-base-composition-1k', 'PyMatting', 'GuidedFilter', ]
-        device_list = ['cuda', 'cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {"required":
             {
                 "image": ("IMAGE",),
@@ -462,7 +463,7 @@ class SegformerUltraV2:
     @classmethod
     def INPUT_TYPES(cls):
         method_list = ['VITMatte', 'VITMatte(local)', 'vitmatte-base-composition-1k', 'PyMatting', 'GuidedFilter', ]
-        device_list = ['cuda', 'cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {"required":
             {
                 "image": ("IMAGE",),
@@ -801,7 +802,7 @@ class LS_LoadSegformerModel:
     @classmethod
     def INPUT_TYPES(cls):
         model_list = ['segformer_b3_clothes', 'segformer_b2_clothes', 'segformer_b3_fashion']
-        device_list = ['cuda', 'cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {"required":
                    {
                     "model_name": (model_list,),
diff --git a/py/vqa_prompt.py b/py/vqa_prompt.py
index 6d8cce1..bf00eb3 100644
--- a/py/vqa_prompt.py
+++ b/py/vqa_prompt.py
@@ -5,7 +5,7 @@ import re
 from transformers import pipeline
 import folder_paths
 
-from .imagefunc import log, tensor2pil
+from .imagefunc import log, tensor2pil, DEVICE_LIST_OPTIONS, get_device
 
 vqa_model_path = os.path.join(folder_paths.models_dir, 'VQA')
 
@@ -34,7 +34,7 @@ class LS_LoadVQAModel:
     def INPUT_TYPES(s):
         model_list = list(vqa_model_repos.keys())
         precision_list = ["fp16", "fp32"]
-        device_list = ['cuda','cpu']
+        device_list = DEVICE_LIST_OPTIONS
         return {
             "required": {
                 "model": (model_list,),
@@ -49,6 +49,7 @@ class LS_LoadVQAModel:
     CATEGORY = '😺dzNodes/LayerUtility'
 
     def load_vqa_model(self, model, precision, device):
+        device = str(get_device(device))
 
         if (model == self.model_name and precision == self.precision and device == self.device
                 and self.model is not None and self.processor is not None):